On 4th February the Air Almanac lists 19:41 as the time of sunset at 50°00'S. An observer registers sunset at 21:13 UTC this day.
What is the observers position?
Sunset at 50˚00’S: 19:41
Air Almanac data representing data for Prime meridian.
As the observer registered sunset at 21:13 (further more from data at prime meridian) so we are more to west (Sunset in westerly location after it sets for more easterly locations).
Time difference: 21:13 - 19:41 = 01:32
(1 hour is represented by 15˚ longitude)
01:32 representing 23˚
Observer location: 50˚00’S, 023˚00’W
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